Variable-landing device



F. C. FUHLOW.

VARIABLE LANDINGDEWCE.

MPLICAIION HLEU ma. 9. 19|7.

latented June 3, 1919.

2 sHms-snm INVENTOR ATTORNEY F. C. FURLUW.

VARIABLE LAND!NG DEVICE.

APPLICATION HL[D FEU. 9. IS!L 1,305,594.

2 SHEETS-SHEET 2.

ATTORNEY Intented J une 3. 1919.

GOYM 0 JERSEY CITY,

VARIABLELANDING DEVICE,

Speifiatibn of Lctters Patent.

Pat n {un 3, 19-- Appliation filed lebxuary 9, 19155 Ser iaLNo. 147,574.

Be it known thut I, FLOYD*'C.. Fnnmw, a citizon of the Unitod btates,nesiding in Montclair, in thenounty of Esscx and.tatn of New Jersey,havo invented a nc.W and nseful Improvement in V ariablc.-LandingDovices, of which the following is.a specification.

The invention relates to: improvoments in olevator apparatus, and is;directod more particnlarly to that cl t tss of won]: wherein a stoppingpoint for the elevato1: can,on in other words, the landing heigl1t orelevation, is caused t0 vary from time .to time,.as for example in thecase in the operation of stacking material in a warohousc; or in loadingor .unloading a bout 01' barge; and the object of the invention is toprovide means to operate and control the clevator car to stop the latterlevel with snob landings, the cont1olling apparatus boing arranged forad jusfimeht manually atwill '01 auto1haticall in accordance With thevariation in ,the hoight of the stoppingpoint, and in this n1anner bringthecar lcvel with the landing in each instance as the height of thelatter varies.

In th accompanying drawings, Figure 1 illustratesin a more or lessdiagrammatiC manner, a typical clectric eleyatonsyslem, in Which the carlandingcontrolling apparatus is arranged fol adjuStm,nt antoinatioallyin accordance With a variable lunding, tl1e latter inthe presentinstance being in the form 0.1 a barge; Figs. 2, 3 and 4 arediagrammatic illustrations of modified aifiangcmonts Figs. 5 and6-illnstrate diagrammaoically othor modified arrangements whereby thecontrolling apparatus to lei*el the car With a landing can be adjustedmainlally;

Referring to Fig. 1, a couiitenweiglicl olevator car 0, is connected totheelectric motor M, through a well known worm and gcar wheelconnectmn-A, and w1nd1ng d1tnn B, to which the hoisting cble 1 isconiwcted: Auxilia1y apparatus to operate the car indopondcntly oftlie'motor M, comprises an electric 1notor M, which is adapted to operatetl1e hsting drum B, through the intermediary of a supplemental worniandear connection A, au electrically contro lad clutch meclmnism D, andworm and gear connction A. The Worm wheel2'is mountedfree on the wormshaft 3, and the cluth mechanis1n D, through the action of*the springa4, establishes a oimcction botWecn tho no1;n1 whccl 2.andwomx shaft32 An eiQL1}U-lllagl lGl 5:opeytes the clutch to.dis connect, tln:W01'1n nil1cel 2 f1oxnthe worm shaft 3,- It Wlll be pointed out, thatWhilc I have illustrated lgerein ono. wcll known type of latchmechaflism such.as D, th rdmay beesubstitnted tlierof0v, a 1'nechanismof the rot;wy bxalo type, snh asis illustrated and described in myco-pending application, Serial No. 59,738, tl 1o,saidapplication alsoillnstrating and? describing in datait the main and aux;iliarydrivingzipparatus, herctoforo descyibod herein only in -goncral. Tl1cdirection. of rotation of the-hoisting motor M is controlled by means ofclectro magnetic reversing switchcs R, R, tho ciruits l'or theiropenating windings G, G, respectivel} bcing Contvolled from the car bya. 1nanually opcrable switcli E.

Controlling mechanism forthe auxiliary 1notor M, comprises reversingswitohesG, G, 1novable with,the elcvaton car, these switches beinglicld' normally .open by springs 8. These switches areol-set f1oin eachotlien and are adaptcd to be aotuuted 1nochanicall by means ofadjustable Gams 7, 7, provi od withlide rails P, sec Fig. 65 Thcse camsarc o-set f10ln' oaCl1 other, tlxe cam 7 coacting witlr thc switoh G, toclose the latter and control the auxiliary n1otor M to opcrate the carin a dsoendil1g direction, tho can1 7 coactin with the switch G to closethe latter anc control the anxiliary motor to operate the car in anusccnding direction.

Tlne cams are operatively connectedwith a barge F positioned at a dockor wha1f H, in a inannor to affect movement or adjustment thoreof inaccordancewiththe variation in height of tlne dock 9of the barge, or inothcr words, as the dock leel"raises or lowers, a correspondingmovement' of the cams is effectcd. Tliis connection comprises a ropoornable 10, une end of wliich is connected to the barge by a hook andeye connection 11, and tho other end to a pulley 12 fixed on a shaft 13:An additional rdpe or sable 10 is co1mccbed at 0110 of its ends to thecam 7 thenco makes a mnnber of tu1ns around a pulley 12 fixed on theshaft l3, thcnoe around un idlorl4 t0 aam countei= woi lit 15. u

Tic opcration of the elements thns: far designated is as follows: Movingtlie-Car the worm wheel 2 vFrom the shaft 3.

switch handle toward tl1c riglit closes a circuit for the reversingswiteh operatinp winding 6, this causing the reversing switc to closeitscontacts and thcrcbj close a Cil" cuit to the hoisting rnotor M, toeffect operation of tlre car in an ascending direction. At the sainetime :1 cironit is closed by tho auxiliaiy contacts 1.6, for tire clutchmuguet 5, which operates to disconnect tlre worm wheel 2 from the shalt3, The elevator car is brought to rest by retnrning the car switolr toits center position, tl1e auxiliary wcrm and gear through tlie clutch1nechanism serving at this time as a braking device for the car. Anadditional electro-mechani cal brake of thensnal type may be provided,this brake bein applied directly to the shaft of' the auXiiary motor 1\tlxis brake being Omitted to avoid nnnecessary complication.

e Will assume now, that the olevaim car is sto ped at the fioor landingL, and il. is desirec to b1ing tlie car to the dock level 9.- Toaccomplish this result the car switch is mov'ed toward tho loft andcloses a circuit for the reversing switoh winding tl1is cansing therevcrsing switch R to close ils: contacts and close a circuitto thelmisting motor-M, to efleot oporation of the car in a decendingdirection, tl1e clntch magnat 5, operat1gas before described t0disconnect 'Jhc car now descends and brings the rollor 17 associatcdWith the switch G, into engaemont with the cam 7. If at this time t1ecar switch E is in central position, so that both of the reversingswitches are in open position, acircuit is closed to the auxiliaryanotor M, the circuit being traced as fol lows: from main, Wiie 18, towire 19, by way of back contacts 20 on the reversing switclxos R, R,switcl1 G, to wire 21, tlnough armature of anxiliary motor to wire 22,switch G, and thence by aire 22 to the lino. The olutch magnat 5, nowbcing denergized permits-the spring 4 to oporate the clutclrmechanism toconnect tlle worm 2 with the shaft 3. The auxiliary molor M 110Woperates the car at a oomparatively slow rate of speed in a descendingdirection. When the car plutform cornes levelwith the dock 9 of tl1ebarge, the roller 17 at this time rides off of tlre cam 7 and a spring 80 cm; the switch G, and in this manner tl1e c1rcuit to the auxiliarymotor is opened and the car brought to rest.

.If for any reason whatsoevcr, the car should coastpast the dock lovel9, the roller associated With the switch G will coact with the cam 7thereby closing tl1e switch Gr and in this manner affect an operation ofthe auxiliary motor in a reverse direction to that just described, thuscansing tlxe car to ascend and stop level with the dock level 9.

With rc:terence now to the connection between the barge and the cams 7,it will be seen that for each movement of the'barge to change the heightof its dock lGvel, a correspondmg movement is likewise i1n )ttl't&d 10the cams by the said connection tin's resulting in bringing the caralways level Witll tlie dock level 9.

In tlio modification illustrated in Fig. 2, opposite cnds of a rope orcablc 10 forming a loop nround the top and botton1 idlers 28, 94-,respectively, are connected to the cams 7, 7. A bar 25, fonns a ri idconnection l etween the barge F and cab e 10, whereby ill0 latter actsto adjust the cams 7, 7', in accordance Witli tlie movement of the bargeas it 11LlSGS or lowers.

In the modification illnstrated in Fig. 3, the use of a flexibleconnection betweon thc barge and cams 7, 7 is eli1ninated, simply lvyattachino tlie cams directly to a i'igid member 25 fastened to the dockof the barge F.

Figs. 4 and 5 illnstrate diagramnmticxdly a condition met Witli in astorage ware honse where the height of the landingor slopping point ofthe car is varied by tlne operation of staclring the goods, Which oftentimos are in the form of baies, etc. In Fig. 4l, tlio lloor oftlio'warohouscis dcsignated by tlie reference numerl 26. Tlxe Gains inthis instance are adapted to be adjnSted mannally from the car by meansof acable 97, tho cable passing tlnrongh the car. 'Ihe baled goods aredesi mted 29, thcre being two tiers, and as eac tieris completed, aboard 30 or any other suitable means is laid on the top thereof, t0f0rn1 a track way to facilitate move1nent o-f hand tiuck5. As en ch hieris c0mpleted tlie can1s are adj usted m moved npwardly -by l1and fromthe car h y means of the cable 27.

n Figu5, as in all the other cases, the

switches G, G are fixed on the elevator car. This figure also showsan'arrangement wlmroby the cams can i)e readily adjnsted hy liand fromthe warehonse lloor or from (lie top of cacln tier as the case may l e.For this operation a handle 31- is provided.by moans of Whieh the oamsma; be raised or IoWered on the guide rails 32. Suitable fastenings 33are providcd to secn1e the cams in. place on the guide rail aftor beingadjustml to pro 9]. position.

- A saitable sw1tch such as 34 may be provided in any convenient lacesuch as in the eleimtor car, this*sWitcl hein in circuit with the feedwire 19 leading to t e s1vitches G,:G. Ihis switch is normall in clocdposition, but is opened when the came are -being adjustcd to properposition, and in: this manner thc circuit to the auxiliamr m0tor is openwhile making snob -adjust' ment.

The car. leveling apparatns together -with the automatically operatedleVeliug came, may be used in connection with ordnance apparatus tobring elle amlnunition hoist or carrier alw-ays level with the breeeh ofthe gun, irrespective of the position or inclination of'the un.

Hnvin t1us described the invention and without Iimitmg inyself to thepreeise details of construction and arran emeuts o parts what I Claim isnew and esire to seeure lay Letters Patent ol. the United States 1. Inclevator apparatus, the combinatin with the car, means to ope1ate thecar, auxiliary means to operate the car, a landing having a variableelevation, and meaus movable in aecordauce with the landin to cont10]the auxiliary means and leveF the car with the lauding.

2. In elevator apparatus, the combiuatiou with the car, means to operatethe car, auxiliar r meaus to operate tlie car, menus comprisiug a eamand eoacting switch to control the anxiliary menus, and means to adjustone of the said members.

3. In elcvator apparatus, the combuatiou with the car, menus to operatethe car, auxiliary menus to operate the car, coacting menus in thehatchavay and on the car to con- -trol the auxiliary menus to level thecar with the landing, and meaus to adjust one of the said eoactiug meansat Will.

4. In an elevator, the combination with the car, menus to operate thecar, auxiliavy means to operate the car, coaeting. means in the hatchwayand on the car to control the auxiliary means, a lauding having avariable elevation, and meaus to adjust one of' the coaetiu members inaccordanee with the variation in elevation of the landing.

5. In an elevator, tlie eombiuatiou with the car, means to operatethecar, auxiliarv means to operate the car, coactiug members in thehatchway au d'on the car to control the auxiliary means, a landinghaving a "ari able elcvatiou, aiid a eonnection between one of thecoacting nmmbers and the landing.

6. In an elevator, the combination With the car, meaus to operate thecar, auxiliary meaus to operate the car, means comprisug a c0acting eamand switeh to control the auXiliary motor t0 leve1 the car with alandiug, and means to adjnst the cam to change the shopping point of thecar.

7. In an elevator,. the eombination with the car, motor menus to operatethe car, aux ilialy meaus to operate the car, menus com- Copies of thlspatent may be obtained for prising a coaoting ezun and switch to controlthe auxilia1y. means, a landiug having a variable elevation, and acouueot1on between the eam and landing to move the eam correspondingly.

8. In an clevntor, the eombiuation With tlxe car, motor meaus t0 03erate the car, auxiliary menus to oPerate tl1e car, means comprising acam in the hatchway, and coactiug switch to control the auxihary meansto mise and lowor the car, one of the said controlling memhers beingcapable of adjustment et Will to change the stopping point of the car.

9. In an electric elevator to serve fioor laudiugs of variable heights,the combination et the car, motor mechahism, and an olectric coutrolmechanism for the motor, comprising a switoh controlled by the positionof the car, a ean1 positioned to close the switch to cause the motor tooperate the car and to release the switeh to allow it to open to permitthe car to come to a stop level with a lauding, tl1e ca1n beingautomatieally, variably adjustable t0 accord with the variable hoightsof the landing.

10. In an electric elevator, to serve floor landings of variableheights, the combination et the car, motor mechanism, and an cleetriccoutrol meehanism for the motor, comprising a switeh controlled by theposition of the car, a cam positioued to close the switch to cause themotor to opemte the car and to release the switch to allow it to open topermit the car t0 eometo a stop level With a laudmg means to move theeam to change tl1e stopping position of the car to accord with thevariable heights of the anding.

11. In an electric elsvator, to serve floor landiugs of variableheights, the combination of the car, muter meehanism, and an eleetriecoutrol meehauism for the motor, comprising switehes controlled by theposition of the car, came plaeed to close the switehes t0 cause themotor to operate the car and to release the switches to allow them toopen to permit the car to come to a stop love] with a landing, the camebeiug automatically, variably, vertically adjustable to accord with thevariable heghts of. the

landiugs.

five cents cash, by addressing the "Commissoner of Patents, Washiugton,D. U.

